Abstract: Stylus, having a conductive electrode, is mounted at one end of a pivoted stylus support arm within a pickup cartridge body of non-conductive material, removably received in a conductive housing. A conductive spring, with one end in electrical contact with the stylus electrode, is secured at its opposite end to the cartridge body. A printed circuit board, mounted within the conductive housing, comprises a dielectric substrate bearing a conductive coating in several elongated surface regions. The conductive coating in two of said regions defines first and second conductors, lying substantially parallel to each other. When the cartridge is received in the housing, electrical contact is established between the body-secured spring end and one end of the first conductor. Capacitive elements couple the other end of the first conductor to the housing.

Abstract: A diode package comprising a compressible dielectric member having an aperture extending through its two major opposite surfaces. An electrically conductive lid is attached on one of the major surfaces of the dielectric member and an electrically conductive base is attached on the other surface. A semiconductor diode having two terminals oppositely situated is soldered with one diode terminal to the base within the aperture of the dielectric member. The lid is further soldered to the other diode terminal subsequent to the compressible dielectric member being compressed an amount sufficient for the lid to make an electrical connection to the other diode terminal.

Abstract: A two-inductor varactor tunable solid-state microwave oscillator comprising a series tunable circuit wherein one inductor is serially connected with a negative resistance active element, an impedance load, and a varactor. The circuit is tuned by changing the reactance of the circuit by varying electrically the capacitance of the varactor. The second inductor is connected in parallel with the varactor to increase the range of reactance change of the series circuit effected by the variation in capacitance of the varactor to provide thereby for a wider frequency tuning range.